def print_star(count):
    print(("*"*count).center(50))


def harmonic( count):
    total = 0
    for num in range(1,count+1):
        total +=1/num
    return total


import sys

line = int(sys.argv[1])+1
for num in range(1,line*2-1,2):
    print_star(num)


# count = int(sys.argv[1])
# for num in range(1,count+1):
#     print(f"{harmonic(num)=}")



# print(f"{harmonic(2)=}")
# print(f"{harmonic(3)=}")
# print(f"{harmonic(4)=}")
# print_star(3)

